00694naa#a2200181#i#450# EN\\bibl\110041 20251223091054.2 1994-4683 20250913b2025####ek#y0engy0150####ca RU Analysis of the development of triathlon in the Chelyabinsk region Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2025 5 с. Journal article local Триатлон (бег, плавание, велоспорт). 796.093.643.2 Brench Svetlana Viktorovna Shakirova Mariya Vyacheslavovna uchzapiski.lesgaft.spb.ru